Mill: Isle Royale Mill, Houghton, MI

Began → Isle Royale Mill → Became

Operated for

From: 1857

Owned by: Isle Royale Copper Company

Produced: Refined Copper Ore

Method: 3 stamps with 2,250 ton daily capacity

Railroad connection:

Stamp Mill/Smelter:

Until: 

Lifetime Production: 

Notes

Isle Royale Mill was an ore processing facility on the Portage Canal in Houghton County. This facility served the Isle Royal Mine which was located up hill from the mill. The mill first operated about 1898.

Time Line

1899. The Isle Royale mine has begun building a three mile long railroad connecting their mine with the mill site at the mouth of the Pilgrim river. Work on the construction of the stamp mill is to be begun this season. [DFP-1899-0730]